Scoring high on practices, not sure what to do for next 2 months

I started self-studying in the beginning of July, because Kaplan was an utter waste of money. I've been scoring fairly high on all my practice tests I've taken alone since the diagnostic (169-176), and I've read both bibles (I read LG twice), so I need something to do that will benefit me from now until October 4th, besides taking all the prep tests I have left. I guess I'm wondering if anyone has tips for better familiarizing myself with the test. I have a bunch of my old prep tests, but I don't know how I'd go about rereading them to improve my consistency/eliminate careless errors. So, does anyone have tips on how I could effectively study the material on the prep tests? Also, are there any suggestions for additional studying I could do? Thanks.